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authorKarl Berry <karl@freefriends.org>2006-01-17 21:41:51 +0000
committerKarl Berry <karl@freefriends.org>2006-01-17 21:41:51 +0000
commit487ca4806cc046076293cf6cc5fbba0db282bac7 (patch)
tree847b412ab5158dd7bdd7ed7e5a4cc3fbca94be32 /Build/source/texk/dvipdfm/t1crypt.c
parenta3d3111bfe26b8e5f5bc6049dfb2a4ca2edc7881 (diff)
texk 1
git-svn-id: svn://tug.org/texlive/trunk@1485 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/dvipdfm/t1crypt.c')
-rw-r--r--Build/source/texk/dvipdfm/t1crypt.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/Build/source/texk/dvipdfm/t1crypt.c b/Build/source/texk/dvipdfm/t1crypt.c
new file mode 100644
index 00000000000..59229382fd4
--- /dev/null
+++ b/Build/source/texk/dvipdfm/t1crypt.c
@@ -0,0 +1,26 @@
+unsigned short int r;
+unsigned short int c1 = 52845;
+unsigned short int c2 = 22719;
+
+#include "t1crypt.h"
+
+unsigned char t1_encrypt(unsigned char plain)
+{
+ unsigned char cipher;
+ cipher = (plain ^ (r >> 8));
+ r = (cipher+r)*c1 + c2;
+ return cipher;
+}
+
+void t1_crypt_init (unsigned short int key)
+{
+ r = key;
+}
+
+unsigned char t1_decrypt(unsigned char cipher)
+{
+ unsigned char plain;
+ plain = (cipher ^ (r>>8));
+ r = (cipher+r)*c1 + c2;
+ return plain;
+}